Seagate's 8 TB IronWolf NAS hard drive in its 7200 RPM, air-filled CMR version (ST8000VN004), with a 256 MB cache, a rated 210 MB/s outer-track sustained transfer, a 180 TB/year workload rating and a three-year limited warranty.
Specifications checked 26 Sept 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
Seagate's 12 TB IronWolf Pro NAS hard drive (ST12000NT001): a helium-filled 7200 RPM CMR drive with a 550 TB/year workload rating and a five-year limited warranty. Seagate's data sheet and its product manual give different cache (256 MB vs 512 MB) and maximum sustained transfer figures (270 MB/s vs 272/285 MB/s) for this model.
Specifications checked 26 Sept 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.
THE DIFFERENCES, MADE VISIBLE
Visual facts
Differences first. Select a topic for its graphic, sources and conditions.
How to read this comparison
Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.
SPECIFICATIONS SIDE BY SIDE7 topics
SELECTED TOPIC
01 / 07
Storage capacity
Decimal storage capacity: 1 TB = 1,000 GB. Formatting and system use reduce available space.
Seagate IronWolf8 TB
Manufacturer specification · 8 TB decimal capacity (Seagate: one terabyte equals one trillion bytes). Some capacity is used for formatting and other functions.
Manufacturer specification · 12 TB decimal capacity (Seagate: one terabyte equals one trillion bytes). Some capacity is used for formatting and other functions.
Check the connection before the capacity. M.2 NVMe modules and 2.5-inch SATA drives are not interchangeable. Check the host’s protocol, slot or bay, power connection and clearance. Rated speeds use different test systems; we do not turn them into a speed score or overall winner.
Manufacturer specification · 8 TB decimal capacity (Seagate: one terabyte equals one trillion bytes). Some capacity is used for formatting and other functions.
Manufacturer specification · 12 TB decimal capacity (Seagate: one terabyte equals one trillion bytes). Some capacity is used for formatting and other functions.
Seagate IronWolfUp to 210 MB/s maximum sustained transfer rate (outer diameter); 7200 RPM; 256 MB cache
Seagate IronWolf Pro7200 RPM
Sources
Seagate IronWolf
Manufacturer specification · Seagate maximum sustained transfer rate at the outer diameter (OD); Seagate states actual data rates may vary depending on operating environment and other factors. Seagate's IronWolf product page copy says 'delivering sustained data rates up to 180 MB/s' without naming a model or capacity; the data sheet's ST8000VN004 column gives 210 MB/s, which is the figure recorded here. Seagate data sheet DS1904.23 first table; ST8000VN004 is the fourth model column (16TB ST16000VN001, 12TB ST12000VN0008, 10TB ST10000VN000, 8TB ST8000VN004, 8TB ST8000VN002). Not our measurement.
Manufacturer specification · Only the spindle speed is recorded here: both Seagate documents give 7200 RPM. The data sheet and the product manual disagree on the maximum sustained transfer rate (data sheet 270MB/s at the outer diameter; manual 272 MB/s max sustained OD in Table 2 and 285 MB/s sustained max in Table 4) and on cache (data sheet 256MB; manual 512MB); those figures are recorded as explicit conflicts in the max_sustained_transfer and cache fields, not as a value here. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate states actual data rates may vary depending on operating environment and other factors. Not our measurement.
Manufacturer peak claims depend on cache state, host and workload. Queue depth and test systems must match before performance can be compared; these figures do not establish a faster everyday drive.
Seagate IronWolf3-year limited warranty; rated workload 180 TB/year; 3 years of Rescue Data Recovery Services included
Seagate IronWolf Pro5-year limited warranty; rated workload 550 TB/year; 3 years of Rescue Data Recovery Services included
Sources
Seagate IronWolf
Manufacturer specification · Seagate states Rescue services are not available in all countries. Workload rate limit is a rating, not a warranty write cap stated by Seagate.
Manufacturer specification · Seagate states Rescue Data Recovery Services are not available in all countries. Workload rate limit is a rating, not a warranty write cap stated by Seagate.
Manufacturer specification · Seagate-rated mean time between failures (data sheet row 'Mean Time Between Failures (MTBF, hours)'). The product manual states an annualized failure rate of 0.87% (MTBF of 1,000,000 hours) over a 5-year service life in Enterprise Storage field conditions limited to 8760 power-on hours per year, a drive-reported HDA temperature of 40 °C or less, an ambient wet bulb of 26 °C or less and a typical workload, and calls the AFR (MTBF) a population statistic not relevant to individual units.
Manufacturer specification · Seagate-rated mean time between failures, data sheet 'Mean Time Between Failures (MTBF, hours)' row. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001).
Seagate IronWolfRated for 1–8 drive bays; rotational vibration (RV) sensor; dual-plane balance; error recovery control; IronWolf Health Management
Seagate IronWolf ProDrive bays supported: unlimited; AgileArray with dual-plane balancing and time-limited error recovery (TLER); rotational vibration (RV) sensors; IronWolf Health Management
Sources
Seagate IronWolf
Manufacturer specification · Seagate says IronWolf Health Management needs a supported NAS system; check with the NAS vendor. Seagate's product page says IronWolf drives are tested for compatibility with NAS brands such as Asustor and QNAP and recommends consulting the NAS vendor's compatibility list for approved drives.
Manufacturer specification · Seagate says IronWolf Health Management is enabled on all leading NAS systems and to check with the NAS vendor or a Seagate sales representative. Seagate states IronWolf drives have been tested by leading NAS providers such as Asustor, QNAP and UGREEN for compatibility, and recommends reviewing the NAS vendor's compatibility list for the latest approved drive. The rotational vibration rating is recorded separately (vibration_rotational) because Seagate's data sheet and product manual state it with different frequency ranges and units.
Manufacturer specification · Seagate 'Shock, Nonoperating, 1ms and 2ms (Gs)' row. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001).
Check the exact configuration and source conditions for your use.
Allowable supply voltage
Seagate IronWolf5 V ±5%; 12 V ±10% (tolerance including noise)
Seagate IronWolf Pro+12 V and +5 V; tolerance including noise 5 V ± 5%, 12 V ± 10%
Sources
Seagate IronWolf
Manufacturer specification · Seagate data sheet row 'Voltage Tolerance, Inc. Noise (5V/12V)': ±5% / ±10% for ST8000VN004. Seagate data sheet DS1904.23 first table; ST8000VN004 is the fourth model column (16TB ST16000VN001, 12TB ST12000VN0008, 10TB ST10000VN000, 8TB ST8000VN004, 8TB ST8000VN002).
Manufacturer specification · Data sheet 'Power Supply Requirements' row: +12 V and +5 V (no tolerance listed). Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual Table 2: 'Voltage tolerance (including noise)' 5V ± 5% and 12V ± 10%, given as a single value for the 24/20/16/12TB models the manual covers; section 2.5.3 adds peak-to-peak noise limits. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Check the exact configuration and source conditions for your use.
Manufacturer application scope
Seagate IronWolfConsumer and commercial NAS; desktops and workstations; multimedia servers
Seagate IronWolf ProCommercial and enterprise NAS; video production RAID and shared network storage; workstations and servers
Sources
Seagate IronWolf
Manufacturer specification · Seagate data sheet 'Best-Fit Applications'; the data sheet describes IronWolf as purpose-built for connected-home, SOHO and small-to-medium business NAS environments.
Manufacturer specification · Seagate data sheet 'Best-Fit Applications' list (complete). The data sheet also describes IronWolf Pro as purpose-built for creative pro and medium-to-large business NAS environments.
Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives a 256 MB cache; product manual 206815300 Rev B gives a 512 MB cache buffer. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Cache (MB)' 256MB for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Cache buffer' 512MB, a single value spanning all four model columns including ST12000NT001; its key-features list also says '512MB data buffer' and '512MB cache buffer'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Seagate's official documents conflict for ST12000NT001 acoustics: data sheet DS2129.4-2311US gives 20 dBA idle and 26 dBA seek (typical); product manual 206815300 Rev B gives A-weighted sound power of 2.8 bels idle and 3.2 bels performance seek (typical). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Acoustics, Idle (typical, measured in Idle 1 state) (dBA)' 20 and 'Acoustics, Seek (typical) (dBA)' 26 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Drive acoustics, sound power (bels)' idle 2.8 (typical) / 3.0 (max) and performance seek 3.2 (typical) / 3.4 (max); Table 18 gives the same for all models; section 2.7 says these are overall A-weighted acoustic sound power levels consistent with ISO 7779. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Each figure is kept in the unit Seagate states (dBA and bels); not converted.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Max sustained transfer rate (OD)
Seagate IronWolf210 MB/s
Seagate IronWolf ProConflicting evidence
Sources
Seagate IronWolf
Manufacturer specification · Outer-diameter maximum, not an average. Seagate's IronWolf product page copy says 'delivering sustained data rates up to 180 MB/s' without naming a model or capacity; the data sheet's ST8000VN004 column gives 210 MB/s, which is the figure recorded here. Seagate data sheet DS1904.23 first table; ST8000VN004 is the fourth model column (16TB ST16000VN001, 12TB ST12000VN0008, 10TB ST10000VN000, 8TB ST8000VN004, 8TB ST8000VN002).
Seagate's official documents conflict for ST12000NT001's maximum sustained transfer rate: data sheet DS2129.4-2311US gives 270 MB/s (outer diameter); product manual 206815300 Rev B gives 272 MB/s (max sustained, outer diameter, Table 2) and 285 MB/s (sustained data transfer rate, max, Table 4). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Max. Sustained Transfer Rate OD (MB/s)' 270MB/s for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Max sustained transfer rate OD (MB/s)' 272 and 'Sustained transfer rate OD (MB/s)' 259 (single values spanning all four models); Table 4 'Sustained data transfer rate (MB/s max)' 285 for 24/20/16/12TB. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate states actual data rates may vary depending on operating environment and other factors.
Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives 0 °C ambient minimum to 65 °C drive-reported maximum; product manual 206815300 Rev B gives 5 °C to 65 °C drive-reported and a maximum allowable drive-reported temperature of 60 °C. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Operating Temperature (ambient, min °C)' 0°C and 'Operating Temperature (drive reported, max °C)' 65°C for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Operating temperature 5°C to 65°C (Drive Reported Temperature)'; Table 11 '41°F to 149°F (5°C to 65°C) temperature range ... as reported by the drive' and 'The maximum allowable drive reported temperature is 140°F (60°C).' Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Power
Seagate IronWolfData sheet: average operating 10.1 W, idle average 7.8 W; product manual: average idle 7.16 W, typical operating 9.16–10.02 W depending on workload; standby 1.0 W (both); startup current 1.8 A typical (12 V)
Seagate IronWolf ProConflicting evidence
Sources
Seagate IronWolf
Manufacturer specification · The two Seagate sources disagree on idle power: the data sheet (DS1904.23, ST8000VN004 column) lists 7.8 W idle average, while the ST8000VN004 product manual's Table 2 (DC power requirements, 8TB) lists 7.16 W average idle; neither figure is chosen. The data sheet gives one 10.1 W average operating figure; the manual gives only per-workload typical operating totals: 9.96 W random read 4K16Q, 9.16 W random write 4K16Q, 10.02 W sequential read 64K16Q and 9.54 W sequential write 64K16Q. Both list 1.0 W standby. The manual's typical figures are averages of drives tested under nominal conditions at 5.0 V and 12.0 V input and 25 °C ambient.
Seagate's official documents conflict for ST12000NT001 power: data sheet DS2129.4-2311US gives 7.8 W average operating, 5.0 W average idle and 1.0 W standby; product manual 206815300 Rev B gives 8.3–8.98 W typical operating depending on workload, 6.19 W average idle and 1.16 W standby. Both give a 2.0 A typical 12 V startup current. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet (ST12000NT001): average operating 7.8 W; idle average 5.0 W; standby typical 1.0 W; sleep typical 1.0 W; startup current 2.0 A typical (12 V). Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual Table 6 'DC power requirements (24/20/16/12TB models)' (typical measurements based on an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 35°C ambient): Avg Idle 6.19 W; Standby 1.16 W; typical DC operating 8.98 W (random read 4K16Q), 8.75 W (random write 4K16Q), 8.3 W (sequential read 64K16Q), 8.58 W (sequential write 64K16Q). Manual Table 2: startup current (typical) 12V (peak) 2.0A. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Operating shock rating
Seagate IronWolf70 G (read) / 40 G (write); 2 ms
Seagate IronWolf ProConflicting evidence
Sources
Seagate IronWolf
Manufacturer specification · Seagate's ST8000VN004 product manual rates operational shock separately: 70 Gs for reads and 40 Gs for writes at a maximum pulse duration of 2 ms. The data sheet (DS1904.23, ST8000VN004 column, row 'Shock, Operating/Nonoperating: 2ms (max)': 70Gs/300Gs) gives a single 70 Gs operating figure, which matches the read rating.
Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives 50/50 G (read/write, 2 ms) operating shock; product manual 206815300 Rev B gives 40 g (2 ms, typical, limited by Z-axis). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Shock, Operating 2ms (Read/Write) (Gs)' 50/50Gs for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Operational Shock (2 ms) 40 g' (all four models); Table 14 'intermittent shock pulses not exceeding 40 g typical at a 2ms duration limited by Z-axis'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Non-operating vibration rating
Seagate IronWolfNot verified
Seagate IronWolf ProConflicting evidence
Sources
Seagate IronWolf
No source recorded for this side.
Seagate IronWolf Pro
Seagate's official documents agree on 2.27 Grms but conflict on the frequency range for ST12000NT001: data sheet DS2129.4-2311US gives 10–500 Hz; product manual 206815300 Rev B gives 2–500 Hz. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Vibration, Nonoperating: 10Hz to 500Hz (Grms)' 2.27 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Linear Random Non-Operating Vibration 2–500 Hz: 2.27 Grms'; Table 17 'PSD Profile 2-500 Hz at 2.27 Grms'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Rotational vibration rating (operating)
Seagate IronWolfNot verified
Seagate IronWolf ProConflicting evidence
Sources
Seagate IronWolf
No source recorded for this side.
Seagate IronWolf Pro
Seagate's official documents both give 12.5 but conflict on frequency range and unit for ST12000NT001: data sheet DS2129.4-2311US gives 12.5 rad/s at 10–1500 Hz; product manual 206815300 Rev B gives 12.5 rad/s² at 20–1500 Hz (random rotary operating vibration). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Rotational Vibration @ 10-1500 Hz (rad/s)' 12.5 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Random Rotary Operating Vibration 20–1500Hz: 12.5 rads/s²'; Table 16 'PSD OF 20-1500 Hz at 12.5 rad/sec^2'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Units as published; not converted.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Weight
Seagate IronWolfConflicting evidence
Seagate IronWolf ProConflicting evidence
Sources
Seagate IronWolf
Seagate's data sheet (DS1904.23, ST8000VN004 column) and the product page's key specifications list a typical weight of 720 g (1.59 lb), while Seagate's ST8000VN004 product manual (Rev. F) lists a maximum weight of 716 g (1.579 lb). A typical weight above the stated maximum cannot both be right, so no single weight is recorded. · Manufacturer specification
Seagate's official documents conflict for ST12000NT001 weight: data sheet DS2129.4-2311US and the US product page give 670 g / 1.477 lb (typical); product manual 206815300 Rev B gives 655 g / 1.44 lb for the 12TB model (Table 20; Table 2 labels its weight row as maximum). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Weight (g/lb, typical)' 670g/1.477lb for ST12000NT001; the US product page ST12000NT001 key specifications also list 670g/1.477lb. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 20 'Weight' gives 12TB 1.44/655 (lb/g); Table 2 'Weight (max)' lists 685g (1.51 lb), 670g (1.48 lb) and 655g (1.44 lb) across the model columns. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Units as published; not converted.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
10 shared fields have the same recorded value.
WHAT EACH CHOICE ASKS OF YOU
What it brings and what to check
Seagate IronWolf
What it brings
CMR recording, a rotational-vibration sensor and error recovery control are specified for 1–8 bay NAS use, with IronWolf Health Management on supported NAS systems.
Seagate rates only an outer-diameter sequential maximum (210 MB/s) for this 7,200 RPM hard drive; its product manual adds a 4.16 ms average latency but gives no seek-time or random-access performance figures.
Seagate's data sheet rates it at 10.1 W average operating and 7.8 W idle power and 28–32 dBA acoustics, versus 5.3 W / 4.0 W and 25–26 dBA for the 5400 RPM ST8000VN002; the ST8000VN004 product manual lists a lower 7.16 W average idle.
The warranty is three years and the workload rating 180 TB/year, versus the five-year limited warranty and 550 TB/year workload rating Seagate states for its IronWolf Pro drives.
Seagate rates it for 550 TB/year and 2.5 million hours MTBF, with a five-year limited warranty and three years of Rescue Data Recovery Services where offered.
Specified without a drive-bay limit, with AgileArray dual-plane balancing, time-limited error recovery and rotational-vibration sensors for RAID performance in multi-bay systems.
At 12 TB the helium design's rated power is below the air-filled 8 TB and 10 TB IronWolf Pro parts' 10.1 W operating and 7.8 W idle, although Seagate's documents give different 12 TB figures: 7.8 W operating and 5.0 W idle in the data sheet, 8.3–8.98 W typical operating and 6.19 W idle in the product manual.
Seagate's documents disagree on the maximum sustained transfer rate (data sheet 270 MB/s at the outer diameter; product manual 272 MB/s in its specification summary table and 285 MB/s in its recording and interface technology table); neither gives seek-time or IOPS figures (the manual lists only a 4.16 ms average latency).
Non-operating shock is 200 G (data sheet: 1 ms and 2 ms; product manual: 2 ms), below the air-filled 8 TB IronWolf Pro's 300 G on the data sheet; for operating shock the data sheet gives 50/50 G (read/write, 2 ms) and the product manual 40 g (2 ms).
Source-backed specifications for Seagate IronWolf and Seagate IronWolf Pro
Specification
Seagate IronWolf
Seagate IronWolf Pro
CapacityDifferentSources
Seagate IronWolf
Manufacturer specification · 8 TB decimal capacity (Seagate: one terabyte equals one trillion bytes). Some capacity is used for formatting and other functions.
Manufacturer specification · 12 TB decimal capacity (Seagate: one terabyte equals one trillion bytes). Some capacity is used for formatting and other functions.
Manufacturer specification · Seagate lists height, maximum width and maximum depth. Seagate data sheet DS1904.23 first table; ST8000VN004 is the fourth model column (16TB ST16000VN001, 12TB ST12000VN0008, 10TB ST10000VN000, 8TB ST8000VN004, 8TB ST8000VN002).
Manufacturer specification · Seagate lists height, maximum width and maximum depth. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001).
Manufacturer specification · Seagate maximum sustained transfer rate at the outer diameter (OD); Seagate states actual data rates may vary depending on operating environment and other factors. Seagate's IronWolf product page copy says 'delivering sustained data rates up to 180 MB/s' without naming a model or capacity; the data sheet's ST8000VN004 column gives 210 MB/s, which is the figure recorded here. Seagate data sheet DS1904.23 first table; ST8000VN004 is the fourth model column (16TB ST16000VN001, 12TB ST12000VN0008, 10TB ST10000VN000, 8TB ST8000VN004, 8TB ST8000VN002). Not our measurement.
Manufacturer specification · Only the spindle speed is recorded here: both Seagate documents give 7200 RPM. The data sheet and the product manual disagree on the maximum sustained transfer rate (data sheet 270MB/s at the outer diameter; manual 272 MB/s max sustained OD in Table 2 and 285 MB/s sustained max in Table 4) and on cache (data sheet 256MB; manual 512MB); those figures are recorded as explicit conflicts in the max_sustained_transfer and cache fields, not as a value here. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate states actual data rates may vary depending on operating environment and other factors. Not our measurement.
Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives a 256 MB cache; product manual 206815300 Rev B gives a 512 MB cache buffer. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Cache (MB)' 256MB for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Cache buffer' 512MB, a single value spanning all four model columns including ST12000NT001; its key-features list also says '512MB data buffer' and '512MB cache buffer'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Warranty terms and endurance if applicableDifferentSources
Seagate IronWolf
Manufacturer specification · Seagate states Rescue services are not available in all countries. Workload rate limit is a rating, not a warranty write cap stated by Seagate.
Manufacturer specification · Seagate states Rescue Data Recovery Services are not available in all countries. Workload rate limit is a rating, not a warranty write cap stated by Seagate.
Manufacturer specification · Seagate-rated mean time between failures (data sheet row 'Mean Time Between Failures (MTBF, hours)'). The product manual states an annualized failure rate of 0.87% (MTBF of 1,000,000 hours) over a 5-year service life in Enterprise Storage field conditions limited to 8760 power-on hours per year, a drive-reported HDA temperature of 40 °C or less, an ambient wet bulb of 26 °C or less and a typical workload, and calls the AFR (MTBF) a population statistic not relevant to individual units.
Manufacturer specification · Seagate-rated mean time between failures, data sheet 'Mean Time Between Failures (MTBF, hours)' row. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001).
Manufacturer specification · Seagate data sheet 'Best-Fit Applications'; the data sheet describes IronWolf as purpose-built for connected-home, SOHO and small-to-medium business NAS environments.
Manufacturer specification · Seagate data sheet 'Best-Fit Applications' list (complete). The data sheet also describes IronWolf Pro as purpose-built for creative pro and medium-to-large business NAS environments.
Consumer and commercial NAS; desktops and workstations; multimedia servers
Commercial and enterprise NAS; video production RAID and shared network storage; workstations and servers
PowerSources
Seagate IronWolf
Manufacturer specification · The two Seagate sources disagree on idle power: the data sheet (DS1904.23, ST8000VN004 column) lists 7.8 W idle average, while the ST8000VN004 product manual's Table 2 (DC power requirements, 8TB) lists 7.16 W average idle; neither figure is chosen. The data sheet gives one 10.1 W average operating figure; the manual gives only per-workload typical operating totals: 9.96 W random read 4K16Q, 9.16 W random write 4K16Q, 10.02 W sequential read 64K16Q and 9.54 W sequential write 64K16Q. Both list 1.0 W standby. The manual's typical figures are averages of drives tested under nominal conditions at 5.0 V and 12.0 V input and 25 °C ambient.
Seagate's official documents conflict for ST12000NT001 power: data sheet DS2129.4-2311US gives 7.8 W average operating, 5.0 W average idle and 1.0 W standby; product manual 206815300 Rev B gives 8.3–8.98 W typical operating depending on workload, 6.19 W average idle and 1.16 W standby. Both give a 2.0 A typical 12 V startup current. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet (ST12000NT001): average operating 7.8 W; idle average 5.0 W; standby typical 1.0 W; sleep typical 1.0 W; startup current 2.0 A typical (12 V). Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual Table 6 'DC power requirements (24/20/16/12TB models)' (typical measurements based on an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 35°C ambient): Avg Idle 6.19 W; Standby 1.16 W; typical DC operating 8.98 W (random read 4K16Q), 8.75 W (random write 4K16Q), 8.3 W (sequential read 64K16Q), 8.58 W (sequential write 64K16Q). Manual Table 2: startup current (typical) 12V (peak) 2.0A. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Data sheet: average operating 10.1 W, idle average 7.8 W; product manual: average idle 7.16 W, typical operating 9.16–10.02 W depending on workload; standby 1.0 W (both); startup current 1.8 A typical (12 V)
Conflicting sources
Allowable supply voltageDifferentSources
Seagate IronWolf
Manufacturer specification · Seagate data sheet row 'Voltage Tolerance, Inc. Noise (5V/12V)': ±5% / ±10% for ST8000VN004. Seagate data sheet DS1904.23 first table; ST8000VN004 is the fourth model column (16TB ST16000VN001, 12TB ST12000VN0008, 10TB ST10000VN000, 8TB ST8000VN004, 8TB ST8000VN002).
Manufacturer specification · Data sheet 'Power Supply Requirements' row: +12 V and +5 V (no tolerance listed). Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual Table 2: 'Voltage tolerance (including noise)' 5V ± 5% and 12V ± 10%, given as a single value for the 24/20/16/12TB models the manual covers; section 2.5.3 adds peak-to-peak noise limits. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives 0 °C ambient minimum to 65 °C drive-reported maximum; product manual 206815300 Rev B gives 5 °C to 65 °C drive-reported and a maximum allowable drive-reported temperature of 60 °C. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Operating Temperature (ambient, min °C)' 0°C and 'Operating Temperature (drive reported, max °C)' 65°C for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Operating temperature 5°C to 65°C (Drive Reported Temperature)'; Table 11 '41°F to 149°F (5°C to 65°C) temperature range ... as reported by the drive' and 'The maximum allowable drive reported temperature is 140°F (60°C).' Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Manufacturer specification · Seagate's ST8000VN004 product manual rates operational shock separately: 70 Gs for reads and 40 Gs for writes at a maximum pulse duration of 2 ms. The data sheet (DS1904.23, ST8000VN004 column, row 'Shock, Operating/Nonoperating: 2ms (max)': 70Gs/300Gs) gives a single 70 Gs operating figure, which matches the read rating.
Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives 50/50 G (read/write, 2 ms) operating shock; product manual 206815300 Rev B gives 40 g (2 ms, typical, limited by Z-axis). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Shock, Operating 2ms (Read/Write) (Gs)' 50/50Gs for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Operational Shock (2 ms) 40 g' (all four models); Table 14 'intermittent shock pulses not exceeding 40 g typical at a 2ms duration limited by Z-axis'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Manufacturer specification · Seagate 'Shock, Nonoperating, 1ms and 2ms (Gs)' row. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001).
Manufacturer specification · Outer-diameter maximum, not an average. Seagate's IronWolf product page copy says 'delivering sustained data rates up to 180 MB/s' without naming a model or capacity; the data sheet's ST8000VN004 column gives 210 MB/s, which is the figure recorded here. Seagate data sheet DS1904.23 first table; ST8000VN004 is the fourth model column (16TB ST16000VN001, 12TB ST12000VN0008, 10TB ST10000VN000, 8TB ST8000VN004, 8TB ST8000VN002).
Seagate's official documents conflict for ST12000NT001's maximum sustained transfer rate: data sheet DS2129.4-2311US gives 270 MB/s (outer diameter); product manual 206815300 Rev B gives 272 MB/s (max sustained, outer diameter, Table 2) and 285 MB/s (sustained data transfer rate, max, Table 4). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Max. Sustained Transfer Rate OD (MB/s)' 270MB/s for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Max sustained transfer rate OD (MB/s)' 272 and 'Sustained transfer rate OD (MB/s)' 259 (single values spanning all four models); Table 4 'Sustained data transfer rate (MB/s max)' 285 for 24/20/16/12TB. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate states actual data rates may vary depending on operating environment and other factors.
Manufacturer specification · The other 8 TB IronWolf part, ST8000VN002, is a 5400 RPM drive; this record is ST8000VN004. Seagate data sheet DS1904.23 first table; ST8000VN004 is the fourth model column (16TB ST16000VN001, 12TB ST12000VN0008, 10TB ST10000VN000, 8TB ST8000VN004, 8TB ST8000VN002).
Manufacturer specification · Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001).
Manufacturer specification · Product manual Table 2 'Load-unload cycles' (a single value for the 24/20/16/12TB models the manual covers) and section 2.9 '600,000 cycles'; the data sheet has no load/unload row. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Manufacturer specification · Seagate says IronWolf Health Management needs a supported NAS system; check with the NAS vendor. Seagate's product page says IronWolf drives are tested for compatibility with NAS brands such as Asustor and QNAP and recommends consulting the NAS vendor's compatibility list for approved drives.
Manufacturer specification · Seagate says IronWolf Health Management is enabled on all leading NAS systems and to check with the NAS vendor or a Seagate sales representative. Seagate states IronWolf drives have been tested by leading NAS providers such as Asustor, QNAP and UGREEN for compatibility, and recommends reviewing the NAS vendor's compatibility list for the latest approved drive. The rotational vibration rating is recorded separately (vibration_rotational) because Seagate's data sheet and product manual state it with different frequency ranges and units.
Seagate's official documents conflict for ST12000NT001 acoustics: data sheet DS2129.4-2311US gives 20 dBA idle and 26 dBA seek (typical); product manual 206815300 Rev B gives A-weighted sound power of 2.8 bels idle and 3.2 bels performance seek (typical). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Acoustics, Idle (typical, measured in Idle 1 state) (dBA)' 20 and 'Acoustics, Seek (typical) (dBA)' 26 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Drive acoustics, sound power (bels)' idle 2.8 (typical) / 3.0 (max) and performance seek 3.2 (typical) / 3.4 (max); Table 18 gives the same for all models; section 2.7 says these are overall A-weighted acoustic sound power levels consistent with ISO 7779. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Each figure is kept in the unit Seagate states (dBA and bels); not converted.
Show unverified (3)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.
Specifications without verified values for either product
WeightSources
Seagate IronWolf
Seagate's data sheet (DS1904.23, ST8000VN004 column) and the product page's key specifications list a typical weight of 720 g (1.59 lb), while Seagate's ST8000VN004 product manual (Rev. F) lists a maximum weight of 716 g (1.579 lb). A typical weight above the stated maximum cannot both be right, so no single weight is recorded. · Manufacturer specification
Seagate's official documents conflict for ST12000NT001 weight: data sheet DS2129.4-2311US and the US product page give 670 g / 1.477 lb (typical); product manual 206815300 Rev B gives 655 g / 1.44 lb for the 12TB model (Table 20; Table 2 labels its weight row as maximum). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Weight (g/lb, typical)' 670g/1.477lb for ST12000NT001; the US product page ST12000NT001 key specifications also list 670g/1.477lb. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 20 'Weight' gives 12TB 1.44/655 (lb/g); Table 2 'Weight (max)' lists 685g (1.51 lb), 670g (1.48 lb) and 655g (1.44 lb) across the model columns. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Units as published; not converted.
Seagate's official documents agree on 2.27 Grms but conflict on the frequency range for ST12000NT001: data sheet DS2129.4-2311US gives 10–500 Hz; product manual 206815300 Rev B gives 2–500 Hz. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Vibration, Nonoperating: 10Hz to 500Hz (Grms)' 2.27 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Linear Random Non-Operating Vibration 2–500 Hz: 2.27 Grms'; Table 17 'PSD Profile 2-500 Hz at 2.27 Grms'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.
Seagate's official documents both give 12.5 but conflict on frequency range and unit for ST12000NT001: data sheet DS2129.4-2311US gives 12.5 rad/s at 10–1500 Hz; product manual 206815300 Rev B gives 12.5 rad/s² at 20–1500 Hz (random rotary operating vibration). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Rotational Vibration @ 10-1500 Hz (rad/s)' 12.5 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Random Rotary Operating Vibration 20–1500Hz: 12.5 rads/s²'; Table 16 'PSD OF 20-1500 Hz at 12.5 rad/sec^2'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Units as published; not converted.
Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.
